<template>
   <div>
     <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>添加商品</el-breadcrumb-item>
     </el-breadcrumb>
    <el-card>
        <el-alert
            title="添加商品信息"
            type="info"
            show-icon
            :closable="false"
            center>
        </el-alert>
        <el-steps :space="200" :active="activeindex-0" finish-status="success" align-center>
            <el-step title="基本信息"></el-step>
            <el-step title="商品参数"></el-step>
            <el-step title="商品属性"></el-step>
            <el-step title="商品图片"></el-step>
            <el-step title="商品内容"></el-step>
            <el-step title="完成"></el-step>
        </el-steps>
        <el-form :model="addForm" :rules="addFormrules" ref="addFormref" label-width="100px" label-position='top'>
            <el-tabs :before-leave="beforeTabLeave" @tab-click="tabClicked" v-model="activeindex" :tab-position="'left'" >
                <el-tab-pane label="基本信息" name="0">
                    <el-form-item label="商品名称" prop="goods_name">
                        <el-input v-model="addForm.goods_name"></el-input>
                    </el-form-item>
                    <el-form-item label="商品价格" prop="goods_price" >
                        <el-input v-model="addForm.goods_price" type="number"></el-input>
                    </el-form-item>
                    <el-form-item label="商品重量" prop="goods_weight">
                        <el-input v-model="addForm.goods_weight" type="number"></el-input>
                    </el-form-item>
                    <el-form-item label="商品数量" prop="goods_number">
                        <el-input v-model="addForm.goods_number" type="number"></el-input>
                    </el-form-item>
                    <el-form-item label="商品分类" prop="goods_cat">
                         <el-cascader
                            v-model="addForm.goods_cat"
                            :options="catelist"
                            :props="{ expandTrigger: 'hover', value:'cat_id',label:'cat_name',children:'children'}"
                            @change="handleChange"></el-cascader>
                        </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品参数" name="1">
                    <el-form-item :label="item.attr_name" v-for="item in manytabledata" :key="item.attr_id">
                        <el-checkbox-group v-model="item.attr_vals">
                            <el-checkbox border :label="cb" v-for="(cb,i) in item.attr_vals" :key="i"></el-checkbox>
                        </el-checkbox-group>
                    </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品属性" name="2">
                    <el-form-item :label="item.attr_name" v-for="item in onlyTabledata" :key="item.attr_id">
                        <el-input v-model="item.attr_vals"></el-input>
                    </el-form-item>
                </el-tab-pane>
                <el-tab-pane label="商品图片" name="3">
                    <el-upload
                        action="https://lianghj.top:8888/api/private/v1/upload"
                        :on-preview="handlePreview"
                        :on-remove="handleRemove"
                        list-type="picture"
                        :headers="headerObj"
                        :on-success="handleSuccess">
                        <el-button size="small" type="primary">点击上传</el-button>

                    </el-upload>
                </el-tab-pane>
                <el-tab-pane label="商品内容" name="4">
                    <quill-editor v-model="addForm.goods_introduce"></quill-editor>
                    <el-button type="primary" class="btnadd" @click="add">添加商品</el-button>
                </el-tab-pane>
            </el-tabs>
        </el-form>
     </el-card>
    <!-- 图片预览-->
    <el-dialog
  title="图片预览"
  :visible.sync="previewVisible"
  width="50%">
  <img :src="previewPath" alt="" class="previewimg">
  
</el-dialog>

   </div>
</template>

<script>
import  _ from 'lodash'
export default {
    created() {
        this.getcatelist()
    },
    computed:{
        cateId(){
            if(this.addForm.goods_cat.length==3){
                return this.addForm.goods_cat[2]
            }
            return null
        }
    },
    data() {
        return {
            activeindex:'0',
            addForm:{
                goods_name:'',
                goods_price:0,
                goods_weight:0,
                goods_number:0,
                goods_cat:[]  ,
                pics:[]  ,
                goods_introduce:"",
                attrs:[]
            },
            previewVisible:false,
            manytabledata:[],
            onlyTabledata:[],
            selectoptions2:[],
            catelist:[],
            previewPath:"",
            headerObj:{
                Authorization:window.sessionStorage.getItem('token')
            },
            addFormrules:{
                goods_name:[
                    { required: true, message: '请输入商品名称', trigger: 'blur' },
                    { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
                ],
                goods_price:[
                    { required: true, message: '请输入商品价格', trigger: 'blur' },
                ],
                goods_weight:[
                    { required: true, message: '请输入商品重量', trigger: 'blur' },
                ],
                goods_number:[
                    { required: true, message: '请输入商品数量', trigger: 'blur' },
                ],
                goods_cat:[
                    { required: true, message: '请选择商品分类', trigger: 'blur' },
                ]
            }
        }
        
    },
    methods: {
       async getcatelist(){
        const {data:res} = await this.$http.get(`categories`)
        if(res.meta.status!==200) return this.$message.error("获取当前分类列表数据失败")
        this.catelist = res.data
        
       },
       handleChange(){
           if(this.addForm.goods_cat.length!=3){
               this.addForm.goods_cat=[]
           }   
       },
       beforeTabLeave(activename,oldactivename){
           if(oldactivename=='0' && this.addForm.goods_cat.length!=3)
           {
               this.$message.error("请先选择商品分类")
               return false
           }
           
       },
       async tabClicked(){
           if(this.activeindex == '1'){
            const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
                   params:{
                       sel:'many'
                   }
               })
            if(res.meta.status!=200) return this.$message.error("获取动态参数列表失败")
            console.log(res.data);
            res.data.forEach(item=>{
                item.attr_vals = 
                item.attr_vals.length==0? []: item.attr_vals.split(' ')
            })
            this.manytabledata =res.data
               
           }  else if( this.activeindex == '2'){
               const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
                   params:{
                       sel:'only'
                   }
               })
               if(res.meta.status!=200){
                   return this.$message.error("获取静态属性数据失败")
               }
               console.log(res.data)
               this.onlyTabledata= res.data
           }
       },
       //处理图片预览效果
       handlePreview(file){
        console.log(file)
        this.previewPath = file.url
        this.previewVisible =true
       },
       //点击图片×时的处理函数
       handleRemove(file){
           console.log(file)
           const filePath = file.response.data.tmp_path
           const i = this.addForm.pics.findIndex(x=>{
               x.pic == filePath
           })
           this.addForm.pics.splice(i,1)
           console.log(this.addForm)
       },
       //图片上传成功的钩子函数
       handleSuccess(response){
        console.log(response)
         const picInfo = {pic:response.data.tmp_path}
        this.addForm.pics.push(picInfo)
        console.log(this.addForm)
       } ,
       add(){
           this.$refs.addFormref.validate(async valid=>{
               if(!valid)
               return this.$message.error("数据填写不充分")
               //执行添加的逻辑
               const from = _.cloneDeep(this.addForm)
               from.goods_cat=
               from.goods_cat.join(',')
               //处理动态参数
               this.manytabledata.forEach(item=>{
                   const newInfo = {
                       attr_id:item.attr_id,
                       attr_value:item.attr_vals.join(' ')
                   }
                   this.addForm.attrs.push(newInfo)
               })
               //处理静态属性
               this.onlyTabledata.forEach(item=>{
                   const newInfo ={
                       attr_id:item.attr_id,
                       attr_value:item.attr_vals
                   }
                   this.addForm.attrs.push(newInfo) 
               })
               from.attrs = this.addForm.attrs
               console.log(from)
               //发起请求
               const {data:res}=await this.$http.post("goods",from)
               if(res.meta.status!=201){
                   return this.$message.error("添加商品失败")
               }
                this.$message.success("添加商品成功")
               this.$router.push('/goods')

           })
       }
    },
}
</script>

<style scoped>
.el-checkbox{
    margin: 0 5px 0 0!important;
}
.previewimg{
    width: 100%;
    text-align: center;
}
.btnadd{
    margin-top: 10px;
}
</style>